Method of manufacturing hollow blocks of artificial stone.



PATENTED 001?. 4, 1904. Q

J. 0. NYE. y mmfion OF MANUFACTURING HOLLOW BLOCKS OF ARTIPIGIAL'SVTONE.

APPLIOATNH IILIJ) JAR. 2, 190&.

N0, MODEL.

mvzwrozz' WITNESSES UNITED STATES Patented October 4, I904.

PATENT OFFICE.

JOHN ORVILLE'NYE, OF SYRACUSE, NEW YORK.

METHOD OF MANUFACTURING HOLLOW BLOCKS OF ARTIFICIAL STONE.

SPECIFICATION forming part of Letters Patent No. 771,566, dated October4, 1904.

Application filed January 2, 1904. j Serial No. 187,572. (No specimens.)

To all 21/71/0112 it may concern.-

Be it known that 1, JOHN ORVILLE NYE, of Syracuse, in the county ofOnondaga, in the State of New York, have invented new and useful lmprovements in Methods of Manufacturing Hollow Blocks of ArtificialStone, of which the following, taken in connection with the accompanyingdrawings, is a full, clear, and exact description.

This invention relates to improvements in the method of manufacturinghollow blocks of artificial stone to be used for decoration, interiorand exterior finish, and particularly for insulating purposes, such as asubstitute for porcelain and other more expensive insulator-blocks.

The object is to form a hollow block of artificial stone with a smoothpolished surface or surfaces and with grooves in its sides all in thesame operation and at a minimum cost.

Other objects and uses will appear in the following description.

In the drawings, Figure l is a perspective view of an apparatus forcarrying out the objects stated. Fig. 2 is a sectional view of the same,taken on line 2 2, Fig. 1. Fig. 3 is a perspective view of the hollowartificial-stone block formed under my improved method, which is asfollows:

First, a bed 1, of sand or equivalent absorbent, is made into a solidself-supporting mass and formed with one or more projections or cores 2of the same material to form the opening or openings in the block to bemolded. A thin coating or sheet, as,3, of paraflin or a sheet of paperor its equivalent is then applied to the upper surface of the bed 1, soas to surround the base of the core 2 and still leave the upper part ofthe core exposed. 1 next surround the core with ribbed strips t,whichrest upon the edges ofthe sheet 3, with their ribs facing the core 2, toform a chamber or mold, of which the p'araffin sheet 3 is the bottom andthe strips 4 the sides. The material, composed of water, cement, andpulverized stone or equivalent ingredients, is now thoroughly mixed to asemifluid or plastic condition and then poured or mechanically filledinto the mold upon the paraflin sheet 3, so as to fill the chamberbetween the core 2 and sides 4:,which forms a hollow block 5 ofartificial stone, having an opening 6,

'made by the core 2, and also grooves 7, pro

duced by the ribs L.

The bed of sand is usually confined in a suitable flask 8, and it is nowapparent that the moist stone mixture is in contact with the core 2. Themoisture of the mixture therefore percolates into the core and thenceinto the bed beneath the sheet 3. As the sand core and bed continue toabsorb the moisture from stone mixture, the latter soon becomessufficiently hard to remove, which is done by removing the strips 4laterally, as shown by dotted lines, Fig. 2, and then lifting thehardened block from the sheet 3 and core 2.

It will he found that the surface of the block .5 which was in contactwith the paraffined sheet is smooth and polished and that the surfaceswhich were in contact with the wood strips 4: are also smooth and freefrom sand posed to view and presents a neat and ornamental appearance,while at the same time it becomes a part of the wall by working theplaster into the grooves in the edges of the block, which firmly holdsthe block in place, although it may be additionally secured by screws orbolts, if-desired.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

1. The method of manufacturing hollow artificial-stone blocksconsisting: first, in preparing a bed of sand or equivalent absorbentwith one or more projections or cores; second, applying a paraffinsurface to the upper surface of the bed; third, mixing the ingredientsof artificial stone to a fluid condition, then pouring the same upon theparaffin surface.

2. The herein-described method of making hollow blocks of artificialstone consisting: first, in preparing a bed of sand with anupwardly-projecting core of the same material and then applying a sheetof paper with the paraffin coating against the upper surface of the sandbed, then applying wood strips with inwardly-projecting ribs to theedges of the paraffin sheet so that the ribs face the core and thenpreparing a mixture of cement, water and pulverized stone so as to forma semiliquid mass and then pouring this onto the paraffin sheet andbetween the rib-walls of the mold and the core. 3. The herein-describedmethod of making hollow blocks of artificial stone consisting in: first,preparing a bed of sand with an upwardly-projecting core, surroundingthe base of the core with a paraflin sheet so that it rests upon thebed, and then preparing and pouring the mixture upon the paraflinsurface and confining the stone mixture upon said surface preparing abed of porous material, as sand,

with a projecting core of similar porous material, then covering thesurface of the bed around the core with an impervious material, asparafiin, then building a wall around the core so as to rise from theimpervious surface to form the outline of the block, then applying theartificial-stone mixture while in a plastic or liquid state to theimpervious surface so as to fill the space between the core andsurrounding walls and allowing such mixture to stand until hardened, andfinally removing the hardened stone from the impervious surface andcore.

In witness whereof I have hereunto set my hand this 29th day ofDecember, 1903.

JOHN ORVILLE NYE. Witnesses:

HOWARD P. DENIsoN, MILDRED M. Now.

